LTC4252A-1_15 Datasheet, PDF (7/36 Pages) Linear Technology – Negative Voltage Hot Swap Controllers

LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
Typical Performance Characteristics
V_GATEH vs Temperature
3.6
V_GATEH = V_IN – V_GATE,
3.4 ^IIN ^{= 2mA}
(MS ONLY)
3.2
3.0
2.8
2.6
2.4
2.2
2.0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G31
V_GATEL vs Temperature
0.8
UV/0V = 4V
0.7 ^{TIMER = 0V}
GATE THRESHOLD
0.6 ^{BEFORE RAMP-UP}
0.5
0.4
0.3
0.2
0.1
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G14
UV Threshold vs Temperature
3.375
3.275
3.175
3.075
V_UVH
V_UV
2.975
2.875
V_UVL
2.775
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G15
OV Threshold vs Temperature
6.45
6.25
V_OVH
6.05
5.85
5.65
V_OVL
5.45
5.25
V_OV
5.05
4.85
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G16
TIMER Threshold
vs Temperature
5.0
4.5
V_TMRH
4.0
3.5
3.0
2.5
2.0
1.5
V_TMRL
1.0
0.5
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G19
I_SENSE vs Temperature
–10
–12
–14
–16
–18
–20
–22
–24
UV/0V = 4V
–26 _{TIMER = 0V}
–28 ^{GATE = HIGH}
V_SENSE – V_EE = 50mV
–30
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G17
I_TMR (Initial Cycle, Sourcing)
vs Temperature
10
TIMER = 2V
9
8
7
6
5
4
3
2
1
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G20
For more information www.linear.com/LTC4252-1
I_SENSE vs (V_SENSE – V_EE)
0.01
0.1
1.0
10
100
UV/0V = 4V
TIMER = 0V
GATE = HIGH
T_A = 25°C
1000
–1.5 –1.0 –0.5 0 0.5 1.0 1.5 2.0
(V_SENSE – V_EE) (V)
425212 G18
I_TMR (Initial Cycle, Sinking)
vs Temperature
50
TIMER = 2V
45
40
35
30
25
20
15
10
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
425212 G21
425212fe
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